The US is a big country, with a big central government and it is rapidly transitioning into a communist totalitarian state. True, the rest of the world is not that good, but the transition to tyranny in the US poses an imminent existential threat to conservative and libertarians.

I’d say that’s all true, but the transition and final outcome is a threat to everyone in the world. Russia/China and all the other communist and muslim states will be able to do whatever they want with no fear of US intervention.